Debt Instrument, Interest Free Period

No definition available.

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Namespace Prefix:	ctos_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

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+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Details

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Namespace Prefix:
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Period Type:

- Details

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- Details

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- Details

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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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- Details

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- Details

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- Details

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Floor Plan Financing - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Jul. 11, 2025
Floor Plan Financing Arrangements
Debt Instrument [Line Items]
Interest expense	$ 13,800	$ 15,400	$ 27,100	$ 28,300
Daimler Truck Financial \| Line of Credit
Debt Instrument [Line Items]
Debt instrument, interest free period (up to)			150 days
Maximum borrowing capacity	225,000		$ 225,000
Daimler Truck Financial \| Line of Credit \| Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread			0.00%		0.80%
PACCAR Financial Services \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	175,000		$ 175,000			$ 225,000
PACCAR Financial Services \| Line of Credit \| Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread			(0.71%)
Ford Motor Credit Company, LLC \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	42,000		$ 42,000
PNC Equipment Finance, LLC \| Line of Credit \| Revolving Credit Facility \| PNC Equipment Finance, LLC
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 520,000		$ 520,000
PNC Equipment Finance, LLC \| Line of Credit \| Secured Overnight Financing Rate (SOFR) \| Revolving Credit Facility \| PNC Equipment Finance, LLC
Debt Instrument [Line Items]
Debt instrument, basis spread			3.00%